<div class="main-content">
      <div class="left-panel"></div>
      <div class="panel" style="height: 400px;">
       <p style="text-align: center; font-size:40px;padding-top:50px;color:#66CC66"> WELCOME TO ADMIN'S PAGE</p>
        <p style="text-align: center; font-size:20px"> Trang quản lý thông tin website</p>
      </div>
      <div class="right-panel"></div>
      <!-- main.end -->
</div>